mxgraph工作流插件

/** * $Id: mxGraph.java,v 1.337 2012-05-21 10:31:34 gaudenz Exp $ * Copyright (c) 2007, Gaudenz Alder */ package com.mxgraph.view; import java.awt.Graphics; import java.awt.Point; import java.awt.Rectangle; import java.awt.Shape; import java.beans.PropertyChangeListener; import java.beans.PropertyChangeSupport; import java.util.ArrayList; import java.util.Arrays; import java.util.Collection; import java.util.HashSet; import java.util.Hashtable; import java.util.Iterator; import java.util.LinkedHashSet; import java.util.LinkedList; import java.util.List; import java.util.Map; import java.util.Set; import org.w3c.dom.Element; import com.mxgraph.canvas.mxGraphics2DCanvas; import com.mxgraph.canvas.mxICanvas; import com.mxgraph.canvas.mxImageCanvas; import com.mxgraph.model.mxCell; import com.mxgraph.model.mxGeometry; import com.mxgraph.model.mxGraphModel; import com.mxgraph.model.mxGraphModel.Filter; import com.mxgraph.model.mxGraphModel.mxChildChange; import com.mxgraph.model.mxGraphModel.mxCollapseChange; import com.mxgraph.model.mxGraphModel.mxGeometryChange; import com.mxgraph.model.mxGraphModel.mxRootChange; import com.mxgraph.model.mxGraphModel.mxStyleChange; import com.mxgraph.model.mxGraphModel.mxTerminalChange; import com.mxgraph.model.mxGraphModel.mxValueChange; import com.mxgraph.model.mxGraphModel.mxVisibleChange; import com.mxgraph.model.mxICell; import com.mxgraph.model.mxIGraphModel; import com.mxgraph.util.mxConstants; import com.mxgraph.util.mxEvent; import com.mxgraph.util.mxEventObject; import com.mxgraph.util.mxEventSource; import com.mxgraph.util.mxImageBundle; import com.mxgraph.util.mxPoint; import com.mxgraph.util.mxRectangle; import com.mxgraph.util.mxResources; import com.mxgraph.util.mxStyleUtils; import com.mxgraph.util.mxUndoableEdit; import com.mxgraph.util.mxUndoableEdit.mxUndoableChange; import com.mxgraph.util.mxUtils; /** * Implements a graph object that allows to create diagrams from a graph model * and stylesheet. * * <h3>Images</h3> * To create an image from a graph, use the following code for a given * XML document (doc) and File (file): * * <code> * Image img = mxCellRenderer.createBufferedImage( * graph, null, 1, Color.WHITE, false, null); * ImageIO.write(img, "png", file); * </code> * * If the XML is given as a string rather than a document, the document can * be obtained using mxUtils.parse. * * This class fires the following events: * * mxEvent.ROOT fires if the root in the model has changed. This event has no * properties. * * mxEvent.ALIGN_CELLS fires between begin- and endUpdate in alignCells. The * <code>cells</code> and <code>align</code> properties contain the respective * arguments that were passed to alignCells. * * mxEvent.FLIP_EDGE fires between begin- and endUpdate in flipEdge. The * <code>edge</code> property contains the edge passed to flipEdge. * * mxEvent.ORDER_CELLS fires between begin- and endUpdate in orderCells. The * <code>cells</code> and <code>back</code> properties contain the respective * arguments that were passed to orderCells. * * mxEvent.CELLS_ORDERED fires between begin- and endUpdate in cellsOrdered. * The <code>cells</code> and <code>back</code> arguments contain the * respective arguments that were passed to cellsOrdered. * * mxEvent.GROUP_CELLS fires between begin- and endUpdate in groupCells. The * <code>group</code>, <code>cells</code> and <code>border</code> arguments * contain the respective arguments that were passed to groupCells. * * mxEvent.UNGROUP_CELLS fires between begin- and endUpdate in ungroupCells. * The <code>cells</code> property contains the array of cells that was passed * to ungroupCells. * * mxEvent.REMOVE_CELLS_FROM_PARENT fires between begin- and endUpdate in * removeCellsFromParent. The <code>cells</code> property contains the array of * cells that was passed to removeCellsFromParent. * * mxEvent.ADD_CELLS fires between begin- and endUpdate in addCells. The * <code>cells</code>, <code>parent</code>, <code>index</code>, * <code>source</code> and <code>target</code> properties contain the * respective arguments that were passed to addCells. * * mxEvent.CELLS_ADDED fires between begin- and endUpdate in cellsAdded. The * <code>cells</code>, <code>parent</code>, <code>index</code>, * <code>source</code>, <code>target</code> and <code>absolute</code> * properties contain the respective arguments that were passed to cellsAdded. * * mxEvent.REMOVE_CELLS fires between begin- and endUpdate in removeCells. The * <code>cells</code> and <code>includeEdges</code> arguments contain the * respective arguments that were passed to removeCells. * * mxEvent.CELLS_REMOVED fires between begin- and endUpdate in cellsRemoved. * The <code>cells</code> argument contains the array of cells that was * removed. * * mxEvent.SPLIT_EDGE fires between begin- and endUpdate in splitEdge. The * <code>edge</code> property contains the edge to be splitted, the * <code>cells</code>, <code>newEdge</code>, <code>dx</code> and * <code>dy</code> properties contain the respective arguments that were passed * to splitEdge. * * mxEvent.TOGGLE_CELLS fires between begin- and endUpdate in toggleCells. The * <code>show</code>, <code>cells</code> and <code>includeEdges</code> * properties contain the respective arguments that were passed to toggleCells. * * mxEvent.FOLD_CELLS fires between begin- and endUpdate in foldCells. The * <code>collapse</code>, <code>cells</code> and <code>recurse</code> * properties contain the respective arguments that were passed to foldCells. * * mxEvent.CELLS_FOLDED fires between begin- and endUpdate in cellsFolded. The * <code>collapse</code>, <code>cells</code> and <code>recurse</code> * properties contain the respective arguments that were passed to cellsFolded. * * mxEvent.UPDATE_CELL_SIZE fires between begin- and endUpdate in * updateCellSize. The <code>cell</code> and <code>ignoreChildren</code> * properties contain the respective arguments that were passed to * updateCellSize. * * mxEvent.RESIZE_CELLS fires between begin- and endUpdate in resizeCells. The * <code>cells</code> and <code>bounds</code> properties contain the respective * arguments that were passed to resizeCells. * * mxEvent.CELLS_RESIZED fires between begin- and endUpdate in cellsResized. * The <code>cells</code> and <code>bounds</code> properties contain the * respective arguments that were passed to cellsResized. * * mxEvent.MOVE_CELLS fires between begin- and endUpdate in moveCells. The * <code>cells</code>, <code>dx</code>, <code>dy</code>, <code>clone</code>, * <code>target</code> and <code>location</code> properties contain the * respective arguments that were passed to moveCells. * * mxEvent.CELLS_MOVED fires between begin- and endUpdate in cellsMoved. The * <code>cells</code>, <code>dx</code>, <code>dy</code> and * <code>disconnect</code> properties contain the respective arguments that * were passed to cellsMoved. * * mxEvent.CONNECT_CELL fires between begin- and endUpdate in connectCell. The * <code>edge</code>, <code>terminal</code> and <code>source</code> properties * contain the respective arguments that were passed to connectCell. * * mxEvent.CELL_CONNECTED fires between begin- and endUpdate in cellConnected. * The <code>edge</code>, <code>terminal</code> and <code>source</code> * properties contain the respective arguments that were passed to * cellConnected. * * mxEvent.REPAINT fires if a repaint was requested by calling repaint. The * <code>region</code> property contains the optional mxRectangle that was * passed to repaint to define the dirty region. */ public class mxGraph extends mxEventSource { /** * Adds required resources. */ static { try { mxResources.add("com.mxgraph.resources.graph"); } catch (Exception e) { // ignore } } /** * Holds the version number of this release. Current version * is 1